Copper alloys
Phosphor Bronze C51000
UNS C51000 is phosphor bronze with a distinct tin/phosphorus composition.
Identity / state reference
What distinguishes this material
A different tin-content bronze is a different designation; spring properties depend on the actual cold-work condition.
- Designation in this reference
- UNS C51000
- Forms covered by the sources
- Drawn product
- States to distinguish or confirm
- H04 hard
- H08 spring
- Temperature and exposure
- No general service-temperature limit or temperature-independent strength is established by this page. Check the temperature and duration for the specific source table and application.
Other search names in these sources
C51000
Read the scope above: a source’s related product name is not a blanket interchangeability statement.
Property evidence for a stated condition
No condition-specific numerical table is reproduced here
The linked sources establish the identity and the stated product/state scope. Obtain the row for your actual form, section, treatment and test conditions before adopting strength, hardness or a thermal limit.
Resolve these conditions next
- What temper, diameter/thickness and spring or forming requirement are specified?
- Obtain the full material certificate, governing specification/edition, product dimensions and test direction before adopting a property value.
For machining, take the exact grade, supplied condition and measured hardness where applicable into the tool maker’s application data. A generic material-family speed is not a substitute for an operation and tool-specific recommendation.
Sources and what they establish
Reviewed 23 October 2026. A source’s publication date and the review date are different. The scope below identifies the fields checked.
Wieland Concast — C51000
Manufacturer specific alloy page; form and condition must match the selected table. Published typical values and minimum limits are distinct.
Wieland Concast — C51000 ↗Source identity, a named product example and a supplied-batch certificate are different evidence. Cross-standard similarity does not approve substitution.
Corrections from the previous article
- Remove the loose suggestion that 4% or 8% tin variants are interchangeable C51000 and the unsupported 120% rating.
- Remove the untraceable generic machining recommendation (120 %) and cutting-speed ranges; select machining data by actual material condition, tool and operation.
Other references in Copper alloys
Related references, not equivalent substitutes.